I was invited by the 501th StarWars legion Venezuela outpost to participate in a project regarding a stormtrooper helmet, so i based mine on Lucas Arts were the character where dress as StarWars characters.
It took about 5 days of work and I used acryllics and vinyl paints.

This was my work for Cryptozoic and DC comics "Women of Legend" trading cards released last year (http://cryptozoic.com/trading-cards/dc-comics-women-legend-trading-cards).
(This is trading card #32 of the set.)
Made with Paint Tool Sai.